Doorlock



Aug. 11." 1925. 1,549,603

E. O. MURMANN DOORLOCK Filed Aug. 12,v 19,22 2 Sheets-Sheet l n ,nur una, 1

l I lill! INVENToR. gqyewe //r/fm/m [g1/WMM WMZ A TTORNEYS.

Aug. ll. 1925. 1,549,603

E. o. MURMANN DooRLoCK Filed Aug. 12. 1922 2 Sheets-Sheet 2 IN'VENTOR. gage/7e /f//mr/m BY WMM ma@ l ATTORNEYS.

.with a lockA .ofthe character. above described f and has for its primary objectsthe provision`ry` .and corresponding accomplishments are .ob-

Patented Aug. 11, 1925.

i EUGENE@ MURMANN, or GLENnALE, cALrncRNrA.

DOORLOGK.

Applicationled August 12, 1922. Serial No. 581,450.

: To alli/whom t may concern Be `itknown .that I, EUGENE O. MUR- MANN, a citizen ofthe United States, and resident of Glendale, in theconnty of Los 5. Angeles, State of California, have invented ,l new. andiuseful Improvements in a Doorlock, .of whichv the following. isk avspecification.

Thisfinvention,relatesto alock for doors, i. .and pertainsespecially. to ay two `member lock, namely, a` `bolt `operating,memberand a`,.boltl member.

, `recesses in` a doorinsteadof cutting rectangular `=recesses. rllhismvention ihas to do ofA asimple, compact, positively operating, Vand .easily installed structure.

y ',Ihese objectstogether.withother objects tained by means.of,theembodiment of my invention, illustrated. 1n .the .accompanying drawmg,.1n. which 4,tionshowing,myloclr,installed; Fig. 2 is a se'ctlonasseenpn the line 2 -2 of` Fig. 1; Fig. V3. is ai `section 4as seen. .ontheline 33 .cyoflthe idler linger; Fig. Gis a perspective ;view ..sho.wing'.,theface lof a .cover plate; Fig. 1s alperspectlve view Yof thebolt; F1gv 8 is aperspective viewofthelock cylinder ;.y

Fig. `Slis a ..perspective;view .ofthe lock `barrel; and Fig-10 .is a perspective.yiewshow-V` .ing the rearof the; plate.

R-eferring more .particularly toFigs. 1 to 4 a. door isindicated by- A. A cylindrical recess is bored` `therein vfromthe .edge of the Idoor and disposed therein. is the bolt mem- ,berindicatedby B. 4 Extending from one lface ofqthe doorto the other and intersecting the bolt. member. is a` cylindrical. recess ,L forthe bolt operating member indicated by C.y The lbolt operating. member` is key actui ated asdescribed later indetail.

tailsof the .bolt member, it comprises tubularV member 11 toqtherend.ofgwhich is.seA

cured a selvage plate r 12. `An opening is z' Eig. 1 is aperspectiveyviewlpartly. insecf.

\ Referring more particularly .to .the de=k upset therefrom; at loneend. An opening is provided ,in the selvage plate yfor a bolt. 14.

.ofthe tail and presses against-1 the? tubii'lar casing `tending vto force,v the tail downwardly.

-The bolt actuating `member.;comprises a plate 19 adapted to cover one end of thedoor recess and a. barrel body ,20 preferably formed integral Iwith-the.plate. At the Itis desirableto provide a mortise lock .which can beinstalledby boring cylindrical other end are wings`21 for attaching afplate 22. Plate-22 vhas .spacing` lugsi23- formed flthereon. i -:Thespacingl lgs and lplate* have 424. =I)isposedinatheibor/e ofthe barrel is the lock cylinder-26. yThe lock cylindelf'and- Abarrelfare preferably .ofi the wellllrnown cylinder,.type, the d etailsof whichl are well known andineed notA be shown herein.- HowlNever, .upon insertion .ofi ,the .proper key in thekeyholeofg the lock, the, latter .cylinder is released from the barrel soythatit may be;rotated.-'I`he. cylinderlhas a collar 28.

Collar 28 is provided with a, cut-afwaypor- ,tion'29in its` periphery. Rotatably'mo'unted ,onthe cylinder28. is an idler-,3(),having 'lngd 31-disposedin the cnt-a-way .portion of `Qthecollar. .Iheidleris formed with afinger l32 whichextends backwardly, and overhangs .theeylinder Upon turning-thecylinder to the left as; shownl ,in` Fig. 3, ,the ,end .of `the cut-a-.Way.in.the collar will engage the lug =31 on the idler? and. move the idler finger. -Referring particularlylto'Fig. 3, the dotted .linesshow the firstlposition yof thefinger. -Movementl of; `the linger vto the leftrfwill .lift- 'the tail 14 and-then ,push-.thelatter into locking position. The dotted linesinlig. 8

i show. Athe, .position fof the. tail, inwhichY the notch 17 is engaged with the luglffThe movement ofthe finger. 32first l-,ifts the tail Vto release it fromthellug 13- and then moves it forwardly to the position shown'inwFig.

\ 4, in whichpositionfthe tail drops.. softhat .thenotch v17 `is engaged `rby,"alledag 13. v This prevents the bolt, ,from` being V.pushed backwardly except by meansfofvthe'key. 1 In .the .positionbf the partssho,wn-in Fig. 4,

it: isimpossible to withdraw the key,but the keymay lbe `rotated `backwardly and with itthe cylinder?.nntilthe key is, in1 anlnpright yThe bolt has a tail 15 pivotally secured thereposition as shown by the dotted lines in Fig.

.4, when it may be withdrawn. Such movement will not disturb the position of the idler finger. Insertion of the key and turning of the cylinder to the right will engage the end of the cut-a-way with the lug 3l and rotate the finger to the right. First, the finger lifts the tail to release it from the locking lug 3, then retracts the latch and finally drops the tail so that lug 3 rests in notch 17, thereby locking the bolt in position. The cylinder can then be turned backwardly to position for release ot the key. The spring 18 serves to hold the tail downwardly and cause it to dead-lock. lWithout the idler arm and its lost motion connection with the cylinder` the key could not be withdrawn when in the locking position of the parts.

lVhat I claim is:

1. A structure of the character described comprising the combination of a key actuated rotatable member, a pivotally mounted idler finger, a lost motion connection between said member and said finger permitting relative rotation in either direction limited to a partial revolution, a slidable bolt, and coupling means connecting said finger and said bolt for sliding the latter whereby said rotatable member may be returned to key entrance position without disturbing the position of the bolt characterized by the coupling means comprising a tail pivotally secured to said bolt, said tail having a notch, said finger being disposed to engage said notch.

2. A structure of the character described comprising the combination of a key actuated rotatable member, a .pivotally mounted idler linger, a lost motion connection between said member and said finger-permitting relative rotation in either direction limited to a partial revolution, a slidable bolt, and coupling means connecting said finger and said bolt for sliding the latter whereby said rotatable member may be returned to key entrance position without disturbing the position of the bolt characterized by the coupling means comprising a tail pivotally secured to said bolt, said tail having a notch in which the finger is disposed, and catch means for engaging and dead-locking said tail at either end of its travel.

3. A structure of the character described comprising the combination of a key actuturbing the position of' the bolt characterized by said coupling means comprising a tail pivotally secured to said bolt, said tail having a coupling notch on its lower edge tor receiving the finger so that movement of the latter will raise and slide the tail, said tail having locking notches on the lower edge, a stationary catch lug for engagement in said locking notches, whereby at either end of the travel of the tail it is deadlocked and movement ot the finger will raise the tail, release the latter from the catch lug and slide it.

L1. A structure of the character described comprising the combination of a key actuated rotatable member, a pivotally mounted idler finger bent to overhang the member, a lost motion connection between said member and said finger, permitting relative rotation in either direction limited to a partial revolution, a slidable bolt disposed above said member and said finger, and coupling means connecting said finger and said bolt .for sliding the latter, whereby said rotatable member may be returned to key entrance position without disturbing the posi.- tion of the bolt.

5. A structure as specified in claim 4 characterized by the coupling means comprising a tail pivotally secured to said bolt, said tail having a notch and the finger being` .disposed in said notch.

6. A structure as specified in claim 4 characterized by a coupling comprising a tail pivotally secured to said bolt, said tail having a notch in which the finger is disposed, and catch means for engaging and deadlocking said tail at either end of its travel.

7. A structure as specified in claim 4 characterized by the coupling comprising a tail pivotally secured to said bolt, said tail having a coupling notch on its lower edge for the finger so that movement of the latter will raise and slide the tail, said tail having locking notches on its lower edge, a stationary catch lug for engaging in said locking notches whereby at either end of the travel of the tail it is dead-locked and movement of the finger will raise the tail, release it from the catch and slide it.

8. A structure of the character described comprising the combination of a key actuated rotatable member, an idler finger being pivotally mounted on said member and overhanging the latter. a lost motion connection between said member and said finger permitting relative rotation in either direction limited to partial revolution, a slidable bolt, and coupling means connecting said finger and said bolt for sliding the latter, whereby said rotatable member may be returned to key entrance position without disturbing the position of the bolt.

9. A structure as specified in claim 8 characterized by a .coupling comprising a tail pivotally secured to said bolt, said tail having a notch and the linger being disposed in said notch.

10. A structure as specified in claim 8 characterized by the coupling member comprising a tail pvotally secured to said bolt, said tail having a notch in Which the finger is disposed, catch means for engaging and dead-locking said tail at either end of its travel.

11. A structure as specified in claim 8 characterized by a coupling member comprising a tail pivotally securedto said bolt, said tail having a notch disposed Jfor receiving the finger so that movement of the latter will raise and slide the tail, Said tail having notches on its lower edge and a stationary catch lug for engaging said locking notches whereby at either end of the travel of the tail it is dead-looked.

In Witness that I claim the foregoing I have hereunto subscribed my name this 3rd day of August7 1922.

EUGENE O. MURMANN. 

